The Precision Roofing team installed a beautiful GAF Timberline HDZ Slate asphalt shingle along with the full line of GAF products and accessories. GAF WeatherWatch leak barrier, GAF TigerPaw synthethic underlayment, GAF Timbertex Hip and Ridge Cap Shingles, GAF Pro Start starter shingle strip, MasterFlow Power Attic Vent, Lomanco Attic Vents, ShurFlo Gutter Protection System